package arithmetic.thread.conn008;

import java.util.ArrayList;
import java.util.List;
import java.util.Queue;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.LinkedBlockingDeque;
import java.util.concurrent.LinkedBlockingQueue;
/**
 * wait notfiy 方法，wait释放锁，notfiy不释放锁
 * @author alienware
 *
 * 可以用 CountDownLatch中的 await和 countDown来实现，而且不需要用 synchronized关键字
 */
public class ListAdd2 {
    private volatile static List list = new ArrayList();

    public void add(){
        list.add("bjsxt");
    }
    public int size(){
        return list.size();
    }

    public static void main(String[] args) {

        final ListAdd2 list2 = new ListAdd2();

        // 1 实例化出来一个 lock
        // 当使用wait 和 notify 的时候 ， 一定要配合着synchronized关键字去使用
        //final Object lock = new Object();

        final CountDownLatch countDownLatch = new CountDownLatch(1);

        Thread t1 = new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    //synchronized (lock) {
                    for(int i = 0; i <10; i++){
                        list2.add();
                        System.out.println("当前线程：" + Thread.currentThread().getName() + "添加了一个元素..");
                        Thread.sleep(500);
                        if(list2.size() == 5){
                            System.out.println("已经发出通知..");
                            countDownLatch.countDown();
                            //lock.notify();
                        }
                    }
                    //}
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }

            }
        }, "t1");

        Thread t2 = new Thread(new Runnable() {
            @Override
            public void run() {
                //synchronized (lock) {
                if(list2.size() != 5){
                    try {
                        //System.out.println("t2进入...");
                        //lock.wait();
                        countDownLatch.await();
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
                System.out.println("当前线程：" + Thread.currentThread().getName() + "收到通知线程停止..");
                throw new RuntimeException();
                //}
            }
        }, "t2");

        t2.start();
        t1.start();

    }

}
